# SDR AALA201706139011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 12, 2017
- Submitted: June 14, 2017
- Operation: Air carrier
- Aircraft: [N554UW](https://openairdocs.org/aircraft/N554UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4966
- Aircraft time: 18,180 hours, 7,389 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: P4010021000
- Condition: Malfunctioned
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201706139011

## Discrepancy

EMERGENCY POWER SUPPLY TEST FAILED.  RESET EMERGENCY BATTERY PACK 13WL EPSU LIGHT TESTED GOOD IAW AMM 33-51-00-10-003A

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